Strain relief for electrical wire



FIG. 1 is a rear, top, and left side perspective view of a strain relief for electrical wire showing our new design;

FIG. 2 is a right elevational view thereof;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken line showing of structure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a strain relief for electrical wire, as shown and described. 